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3^(y)=9^(-2)
We move all terms to the left:
3^(y)-(9^(-2))=0
We add all the numbers together, and all the variables
3^y-0.0123456790123=0
We move all terms containing y to the left, all other terms to the right
3^y=0.0123456790123
y=0.0123456790123/1
y=0.0123456790123
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